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Tytuł:
Greening of the Textile and Clothing Industry
Ochrona środowiska a przemysł tekstylno-odzieżowy
Autorzy:
Eryuruk, S. H.
Powiązania:
https://bibliotekanauki.pl/articles/234500.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
zielone
przyjazne dla środowiska
ekologiczne
przemysł włókienniczy
przemysł odzieży
green
environmentally friendly
eco-friendly
textile industry
apparel industry
Opis:
Today consumers are becoming more aware of the need to protect the environment, and companies use these terms to promote their goods or services with eco-labels. Environmentally friendly (also eco-friendly, nature friendly, and green) are terms used to refer to goods and services, laws, guidelines and policies claiming to inflict minimal or no harm on the environment. Clothing is an integral part of our lives and green or environmental concerns have started to draw more and more attention in the textile and clothing sector . This paper analysed how green the textile and clothing industry is with respect to the product lifecycle, from raw material through the design, production and logistics up to disposal in order to point out important points and parameters for greening the industry.
W dzisiejszych czasach konsumenci stają sie coraz bardziej świadomi potrzeby ochrony środowiska, firmy natomiast korzystają z tego w celu promowania swoich towarów i usług za pośrednictwem znaków certyfikacyjnych. "Przyjazny środowisku" to termin odnoszący się do produktów, usług i procesów, które w minimalnym stopniu zagrażają środowisku. Odzież jest integralną częścią naszego życia, dlatego coraz więcej uwagi poświęcane jest sprawom ochrony środowiska w sektorze tekstylno-odzieżowym. W artykule przeanalizowano wpływ ochrony środowiska w przemyśle tekstylno-odzieżowym w odniesieniu do cyklu życia produktu, od surowca poprzez projektowanie, produkcję i logistykę, aż do gospodarki odpadami w celu wskazania czynności ważnych dla przemysłu z punktu widzenia ochrony środowiska.
Źródło:
Fibres & Textiles in Eastern Europe; 2012, 6A (95); 22-27
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure and Mechanical Properties of AA1050/ AA6061/AA1050 Multi-Layer Sheet Fabricated by Cold Roll Bonding Process
Autorzy:
Lee, S.-H.
Powiązania:
https://bibliotekanauki.pl/articles/353150.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cold roll bonding process
AA1050/AA6061/AA1050 complex sheet
mechanical properties
electron backscatter diffraction
microstructure
Opis:
A cold roll-bonding process was applied to fabricate an AA1050/AA6061/AA1050 multi-layer sheet. Three Al sheets in which an AA6061 sheet is inserted inside two AA1050 sheets of 2 mm thickness, 40 mm width and 300 mm length were stacked up after surface treatment, and the material was then reduced to a thickness of 1.0 mm by multi-pass cold rolling. The AA1050/AA6061/AA1050 laminate complex sheet fabricated by roll bonding was then hardened by a natural aging (T4) and an artificial aging (T6) treatments. The microstructures of the as-roll bonded and the age-hardened Al complex sheets were revealed by optical microscope and electron back scatter diffraction analysis, and the mechanical properties were investigated by tensile and hardness testing. The strength of the as-roll bonded complex sheet was found to increase by 2.6 times, compared to that value of the starting material. Both AA1050 and AA6061 showed a typical recrystallization structure in which the grains were equiaxed after heat treatment. However, the grain size was smaller in AA6061 than in AA1050.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1489-1492
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some Decapod crustaceans from the Lower Cretaceous of Poland and England
O paru skorupiakach Decapoda z dolnej kredy Polski i Angli
O neskolkikh Desjatinogikh rakoobrazhykh iz nizhnego mela polshi i Anglii
Autorzy:
Collins, J.S.H.
Powiązania:
https://bibliotekanauki.pl/articles/20860.pdf
Data publikacji:
1969
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Źródło:
Acta Palaeontologica Polonica; 1969, 14, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study on the sustainable management framework and the economic value evaluation for Taiwan reservoir watershed
Badania struktury zrownowazonej gospodarki oraz ocena wartosci ekonomicznej zlewni zbiornikow wodnych na Tajwanie
Autorzy:
Lu, S -H
Peng, S.-H.
Ma, H.-W.
Powiązania:
https://bibliotekanauki.pl/articles/81829.pdf
Data publikacji:
2010
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
sustainable management
economic value
Taiwan
reservoir
watershed
valuation method
Opis:
Recently lack of sustainable management for the reservoir watershed becomes a predicament for the water issues in Taiwan. The study tried to recognize the framework of the sustainable management of the Taiwan reservoir watershed and its key factors by using the analytic hierarchy process and the Delphi method. Through the identification questionnaires and the CVM (contingent valuation method), it also discussed the gap of expert and public for the identification of satisfaction, environmental protection and the potential value for the recent reservoir watershed. However, the results showed that the “natural stability” is the significant factor in the first level and the “Nature resources conservation” and “Water storage amount” are the most important factors for the detailed level. In addition, the expert opinions were not proved by public identification, and the present governance budgets are too low to respond to the potential values of public expectancy.
W pracy przedstawiono wyniki badań przeprowadzonych dla określenia hierarchii ważności czynników ekologicznych, ekonomicznych i socjalnych związanych ze zrównoważonym zagospodarowaniem zlewni zbiorników wodnych na Tajwanie. W badaniach zastosowano metodę ankietową, w której respondenci stosując pięciostopniową skalę mieli wskazać ważność 22 określonych przez ekspertów czynników związanych z ochroną i zrównoważonym korzystaniem z zasobów środowiska, wpływających na standard życia mieszkańców oraz możliwości rozwoju gospodarczego na obszarze zlewni zbiorników wodnych. Stwierdzono, że najważniejsze znaczenie dla ludności mają czynniki ekologiczne, w szczególności zapewnienie stabilności przyrodniczej poprzez zachowanie bioróżnorodności oraz ochrony zasobów naturalnych, w tym ilości retencjonowanej wody.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation; 2010, 42, 1; 219-225
0208-5771
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Outlook of present organic agriculture policies and future needs in Sri Lanka
Autorzy:
Pushpa Malkanthi, S.H.
Powiązania:
https://bibliotekanauki.pl/articles/2081020.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
conventional agriculture
organic agriculture
organic farming policies
Sri Lanka
Opis:
Many countries are formulating organic agriculture or organic farming policies aimed at sustainable agricultural development. Therefore, the objectives of this study were: to understand the present situation of organic agriculture policies in Sri Lanka and also in other countries where successful organic agriculture is operating; identify problems in the organic agriculture sector; and suggest potential policy measures to be implemented in Sri Lanka in future. The research was conducted in two stages. In the first stage, a thorough literature review was conducted to study the suitable policies available in other countries and also in Sri Lanka at present. In the second stage, two field surveys were carried out using pre-tested questionnaires, from December 2019 to May 2020, in order to gather farmers’ and extension officers’ information related to organic farming policy suggestions. According to the findings of the literature review, organic systems in some countries are more integrated with national strategic plans and visions. Those governments are more involved in new initiatives and farmers are encouraged to go organic through reliable and feasible policies. Although Sri Lanka has a high potential for organic agriculture, at present it is at an initial stage. While most organic products in Sri Lanka go to the export market, a small portion is kept at local markets. Demand for organic products in export as well as domestic markets is increasing. Even though there are seven international food certification agencies operating in the country as external inspection and certification bodies, a limited number of accredited certifications exist for products on the domestic market. Results of the farmers’ survey showed that even if farmers have a significant level of knowledge, few of them practice organic farming due to several existing problems. Moreover, extension officers have also identified similar types of problems that are faced by the farmers related to organic farming. Evaluation of Strengths, Weaknesses, Opportunities and Threats (SWOT) related to organic agriculture in the country helped to identify key problems facing policy-makers when balancing the supply and demand sides of organic products. Also, in developing organic agriculture, an effective linkage and coordination among government and private participants is crucial. Therefore, in Sri Lanka in this context, strategic focus on policy support for organic agriculture is needed. Current organic farming programs need to be revised in order to formulate policies covering all areas related to production, handling, processing, certification, labeling and marketing, in order to bring the benefits of organic agriculture to farmers, marketers and consumers in a fair manner.
Źródło:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2021, 21[36], 3; 55-72
2081-6960
Pojawia się w:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observations on the effect of proximity to rhyolitic intrusions on Kübler index
Autorzy:
Diskin, S.
Coetzee, S. H.
Powiązania:
https://bibliotekanauki.pl/articles/2086532.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Mineralogiczne
Tematy:
clay
chlorite
dolerite
illite
Kübler index
rhyolite
sediment chemistry
Opis:
The Upper Ordovician sedimentary succession of southeast Ireland is riddled with almost synsedimentary igneous intrusions. A study was required to determine any effects of these intrusions on Kübler Index (KI) so that further sampling for a regional study could be undertaken and the results would be unbiased. Sampling was carried out on the low-grade metapelites (Southeast Ireland) around the rhyolitic and doleritic intrusions, which were intruded into the still soft sediment. Clay mineralogy was determined using X-ray diffractometry and KI values were measured; SEM and whole rock elemental analyses were applied to complement the results of the XRD work. KIs immediately around rhyolitic intrusions were observed in all cases to be lower than the regional KI, however this was not seen around doleritic intrusions. SEM work shows illite grain sizes following the KI trend and K2O were noted to be highest where KI was lowest. Rare earth elements (REEs) show some mobilization which also follows the KI trend. This is considered to be a residual effect of hydrothermal fluids / volatiles hosted by the rhyolites but not encountered in the dolerites. Chlorite crystallinity is not affected as it most likely crystallized after the hydrothermal event. The KI is often used as a proxy for illite crystallinity in studies of low grade metamorphism but is influenced by many parameters and care should be taken when applying this technique to studies of regional metamorphism.
Źródło:
Mineralogia; 2010, 41, 1/2; 75--94
1899-8291
1899-8526
Pojawia się w:
Mineralogia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discrete Fourier transform based pattern classifiers
Autorzy:
Hui, S.
Żak, S. H.
Powiązania:
https://bibliotekanauki.pl/articles/202074.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pattern classification
multidimensional discrete Fourier transform
DFT
Fourier coefficients
Opis:
A technique for pattern classification using the Fourier transform combined with the nearest neighbor classifier is proposed. The multidimensional fast Fourier transform (FFT) is applied to the patterns in the data base. Then the magnitudes of the Fourier coefficients are sorted in descending order and the first P coefficients with largest magnitudes are selected, where P is a design parameter. These coefficients are then used in further processing rather than the original patterns. When a noisy pattern is presented for classification, the pattern’s P Fourier coefficients with largest magnitude are extracted. The coefficients are arranged in a vector in the descending order of their magnitudes. The obtained vector is referred to as the signature vector of the corresponding pattern. Then the distance between the signature vector of the pattern to be classified and the signature vectors of the patterns in the data base are computed and the pattern to be classified is matched with a pattern in the data base whose signature vector is closest to the signature vector of the pattern being classified.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 1; 15-22
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrospinning of Poly(acrylonitrile-acrylic acid)/β Cyclodextrin Nanofibers and Study of their Molecular Filtration Characteristics
Elektroprzędzenie nanowłókien poli(akrylonitrylo - kwas akrylowy)/β cyklodekstran i badanie ich molekularnych charakterystyk filtracji
Autorzy:
Amiri, P
Bahrami, S H
Powiązania:
https://bibliotekanauki.pl/articles/232789.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
electrospinning
cyclodextrin
poly(acrylonitrile-acrylic acid)
molecular filtration
elektroprzędzenia
cyklodekstryny
spektroskopia FTIR
sączenie molekularne
stężenie polimeru
nanowłókna
Opis:
Acrylonitrile acrylic acid copolymer was synthesised using suspension polymerisation and β-cyclodextrin was mixed with this copolymer in different ratios. then poly(acrylonitrileacrylic acid)/-cyclodextrin (PANAA/-CD) nanowebs were produced using the electrospinning process. The effect of different electrospinning parameters such as polymer concentration, distance, flow rate and voltage on nanofibre properties was studied. The presence of CD molecules in the PANAA solutions did not affect the diameter of nanofibres significantly. The presence of CD molecules in the PANAA/CD nanofibres produced was studied by means of Fourier transform infrared (FTIR) spectroscopy. The molecular filtration capability of the nanowebs produced was studied using phenolphthalein as a model organic molecule, by means of a UV-Vis Spectrophotometer. Results show that the nanofibres produced are able to remove phenolphthalein effectively from the solution. These nanowebs have the potential to be used as a molecular filter and/or nanofilter for filtration/purification/separation purposes.
Syntezę kopolimeru akrylonitrylu i kwasu akrylowego przeprowadzono w zawiesinie, β-cyklodextran był mieszany z kopolimerem w zróżnicowanych ilościach. Następnie runo (PANAA/-CD) było wytwarzane metodą elektroprzędzenia. Badano wpływ różnych parametrów procesu, takich jak stężenie polimeru, odległość od filiery, szybkość przepływu i napięcie, na właściwości nanowłókien. Obecność molekuł CD w roztworach PANAA nie wpływała istotnie na średnicę nanowłókien. Badania przeprowadzono stosując metodę spektroskopii FTIR. Zdolność runa do filtracji molekularnej badano przy zastosowaniu fenoloftaleiny oraz spektrofotometrii UV-Vis. Badania wykazały, że wyprodukowane nanowłókna są zdolne do eliminacji fenoloftaleiny z roztworu. Wyprodukowane runa potencjalnie mogą być wydajnie zastosowane jako filtry molekularne oraz dla filtracji, oczyszczania i separacji.
Źródło:
Fibres & Textiles in Eastern Europe; 2014, 1 (103); 14-21
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crack analysis in bimaterial interfaces using T-spline based XIGA
Autorzy:
Habib, S. H.
Belaidi, I.
Powiązania:
https://bibliotekanauki.pl/articles/279517.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
extended isogeometric analysis
T-splines
bimaterial interface cracks
enrichment functions
local refinement
Opis:
Analysis-suitable T-splines are used for the modeling and analyzing of cracks in bimaterial interfaces within the framework of an extended isogeometric analysis (XIGA). The crack tip enrichment functions of bimaterial interface cracks are implemented to reproduce singular fields, and the signed distance functions are used to treat the crack face and the interface in the models. A compatible local refinement algorithm is applied to refine location of the crack and the interface, which helps one to avoid produce excessive propagation of control points. The mixed mode stress intensity factors (SIFs) which are evaluated by the interaction integral (M-integral) are used as analysis parameters. Numerical simulations are performed to analyze the problem and to examine the efficiency of the proposed method. The obtained results are compared with other available results.
Źródło:
Journal of Theoretical and Applied Mechanics; 2017, 55, 1; 55-68
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image Recall Using a Large Scale Generalized Brain-state-in-a-box Neural Network
Autorzy:
Oh, Ch.
Żak, S. H.
Powiązania:
https://bibliotekanauki.pl/articles/908482.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
pamięć asocjacyjna
sieć neuronowa
pamięć obrazu
associative memory
Brain-State-in-a-Box (BSB) neural network
overlapping decomposition
image recall
Opis:
An image recall system using a large scale associative memory employing the generalized Brain-State-in-a-Box (gBSB) neural network model is proposed. The gBSB neural network can store binary vectors as stable equilibrium points. This property is used to store images in the gBSB memory. When a noisy image is presented as an input to the gBSB network, the gBSB net processes it to filter out the noise. The overlapping decomposition method is utilized to efficiently process images using their binary representation. Furthermore, the uniform quantization is employed to reduce the size of the data representation of the images. Simulation results for monochrome gray scale and color images are presented. Also, a hybrid gBSB-McCulloch-Pitts neural model is introduced and an image recall system is built around this neural net. Simulation results for this model are presented and compared with the results for the system employing the gBSB neural model.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2005, 15, 1; 99-114
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discrete Fourier transform and permutations
Autorzy:
Hui, S.
Żak, S. H.
Powiązania:
https://bibliotekanauki.pl/articles/202022.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
discrete Fourier transform
DFT
DFT invariants
Fourier coefficients
permutations
DFT coefficient magnitudes
circulant matrix
pattern recognition
Opis:
It is well known that the magnitudes of the coefficients of the discrete Fourier transform (DFT) are invariant under certain operations on the input data. In this paper, the effects of rearranging the elements of an input data on its DFT are studied. In the one-dimensional case, the effects of permuting the elements of a finite sequence of length N on its Discrete Fourier transform (DFT) coefficients are investigated. The permutations that leave the unordered collection of Fourier coefficients and their magnitudes invariant are completely characterized. Conditions under which two different permutations give the same DFT coefficient magnitudes are given. The characterizations are based on the automorphism group of the additive group ZN of integers modulo N and the group of translations of ZN. As an application of the results presented, a generalization of the theorem characterizing all permutations that commute with the discrete Fourier transform is given. Numerical examples illustrate the obtained results. Possible generalizations and open problems are discussed. In higher dimensions, results on the effects of certain geometric transformations of an input data array on its DFT are given and illustrated with an example.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 6; 995-1005
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wedge functions applied to 2D magnetostatic problems
Autorzy:
Huijer, E.
Karaki, S.H.
Powiązania:
https://bibliotekanauki.pl/articles/140344.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
klin
przenikalność magnetyczna
metoda całkowo-brzegowa
finite permeability
wedge functions
segment functions
boundary integral method
Opis:
In this paper the application of so called wedge functions is presented to solve two-dimensional simple geometries of magnetostatic and electrostatic problems, e.g. rectangles of varying aspect ratio and with different values of the magnetic permeability μ. Such problems require the use of surface charge density, or segment source, functions of the form ρs = σa-1, where the power parameters, a, have special fractional values. A methodology is presented to determine these special values of a and use them in segment sources on simple geometries, i.e. rectangles of varying aspect ratio, and with different values of the magnetic permeability μ. Wedge solutions are obtained by coupling the strength coefficients of source segments of the same power around an edge. These surface source functions have been used in the analysis of conducting and infinite permeability structures. Here we apply such functions in a boundary integral analysis method to problems having regions of finite permeability.
Źródło:
Archives of Electrical Engineering; 2011, 60, 4; 519-529
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 2299

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